Controlling means for drills



A. H. KATTERJOHN 1 9 Filed March 23, 1928 5 Sheets-Sheet 1 CONTROLLING MEANS FOR DRILLS" March 17, 1931 March 1931- A. H. KATTERJOHN CONTROLLING MEANS FOR DRILLS Filed March 25 1928 3 Sheets-Sheet 2 March 1931 A. H KATTERJOHN CONTROLLING MEANS FOR DRILLS 3 Sheets-Sheet 5 Filed March 23, 1928 I i mk gwucntw Patented Mar. 17, 1931 UNETED. STATES PATENT OFFICE AUGUST H. KATTERJOHN, OF DENVER, COLORADO, ASSIGNOR 'IO GARDNER-DENVER COMPANY, OF DENVER, COLORADO, A COBPGRATION OF DELAXVARE CONTROLLING MEANS FOR DRILLS Application filed March 23, 1928. Serial No. 264,077.

The object of the present invention is to provide novel means of a simple and effective character for governingthe flow of cleansing fluid to the drill bit.

In the accompanying drawings: a

Figure 1 is a longitudinal sectional view through a drill equipped with the novel mechanism,

Figure '2 is a sectional view on the line 22 of Figure 1.

Figures .3, l, and 5 are detail sectional views taken substantially on the line 5-5 of Figure '2 and showing the throttle and water controlling valves in different relations.

Figure 6 is a face view of the actuating cam and its mounting on the throttle valve stem. 7

In the embodiment disclosed, a cylinder member 6 is provided with a piston chamber 207, and in said chamber is located a reciproca- 'tory piston 8 having a reduced hammer extension 9. This hammer extension in the present embodiment, is adapted to strike :a

tappet 10, against which is seated the rear 25 end of a drill steel 11 having a bore 12 therethrough. An automatic distributing valve is shown at 13, and is adapted in the nsual manner to control the distribution of air or I other motive fluid alternately to opposite 3o sides of the piston 8 to effect the reciprocation of the same. A rifle bar 14 is provided for effecting the step-by-step rotation of the piston in a manner well understood and the piston in turn effects a corresponding rotation of the chuck 15 in which the drill steel 11 is located.

Extending longitudinally through the rifle bar 14, piston 8, hammer extension 9 and tappet 10 is a water tube 16 that enters the bore 12 of the drill steel and is designed to supply water thereto and thus through the bore to the bottom of the drilled hole for the purpose of laying the dust and Washing out the cuttings. As shown the rear end of this tube 16 is flanged at 17. and is abutted against by a plug 18 having inlet ports 1.9 that communicate with the bore of the tub-e 16. The ports open into a chamber 20 formed in the rear '50 head 21 of the cylinder member 6. The aforesaid mechanism for the purposes of the claims may be defined as a body.

For the purpose of supplying and controlling the supply of air or other fluid to the distributing valve 13, a tapered throttle valve 22 is rotatably mounted in a valve casing 23 formed on one side of the rear head 21. Motive fluid is supplied to the larger end of the valve 22 by a suitable hose coupling 24 and said'valve is hollow as'shown at 25. It is furthermore provided with a lateral port 26 that is movable into and out of communication with a passageway 27 that leads to the automatic distributing valve, as is well understood. The throttle valve 22 is provided on its smaller end with an axial stem 28 having opposite flattened faces 29. as shown more particularly in Figure 6. This throttle valve is the feature hereinafter defined in the claims as the rotarymemiber. On the end of the stem 28 is a handle 30 by which the valve can be readily turned. Formed in the rear head 21 or body and shown-more particularly in Figure 2, is a transverse sock et 31 into which is fitted a valve cage 32 having an external annular flange 33. Interposed between the bottom of the socket 31 and the flange 33 is a packing gasket 34. A plug 35 threaded into the outer end of the socket has a recessed seat that receives the outer end of the cage 32 and said plug bears *agam-st sald outer end and holds the cage firmly against said gasket 34;. The interior of the cage 32 is provided with a valve seat a passageway 41 that opens into the socket 31 between the inner end of the plug 35 and the flange 33. Ports 42 through the walls of the cage serve to admit this water to the interior of said cage above the ball valve. Below the valve seat 36 and the valve 37 other outlet ports 43 open from the interior of the cage to an external annular groove 44 and said groove is in communication with a passageway 45 opening into the chamber with which the rear end of the water tube 16 communicates.

Located on the throttle valve or rotary member stem 28 behind the handle is a cam 46 having two spaced outstanding stop lugs 47, between which is located an abutment pin 48. The cam enlargement is designated 49. It will be noted by reference to Figure 2 that this cam 46 is located in a recess 49a formed by an annular wall 50 about the same. A recipro-catory actuating stem or plunger 51 is slidably mounted in the rear head, its lower end resting against the periphery of the cam, its upper end bearing against the ball valve 37. A packing gasket 52 surrounds the stem and is clamped between the inner end of the cage 32 and the extreme bottom of the socket 31. A relief port 53 for leakage opens from behind the gasket 52 to atmosphere.

As will. be clear by reference to Figures 2-6 inclusive, when the throttle valve 22 is in its fully closed position, as shown in Figure 3, one of the stops 47 (Figures 3 and 6) is against the abutment pin 48, the supply port 26 of course then being completely out of communication with the passageway 27 leading to the tool. The stem 51 is then in its retracted position and the ball valve 37 is closed, so that no water can flow past the same. As the throttle valve is turned to its open position the port 26 will first open to the port 27 as shown in Figure 4 so that air or other fluid will be initially supplied to the tool and thereafter as the valve is continued to its-fully open position, the cam portion 49 will move under the stem 51, raising the same and opening the ball valve, whereupon water supplied to the nipple 40 will flow through the passageway 41. into the ports 42, out of the ports 43, and thence by the passageway to the water tube 16. Flowing through this water tube it will enter the f bore of the drill 12 and be directed to the bottom of the hole being drilled. The fully open movement of the valve i determined by the other stop 47 striking the abutment pin 48. A return movement of the throttle valve permits the spring 38 of the ball valve, which has been compressed, to react.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art without further description and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

hat I claim, is:

1. In a valve for drilling apparatus, the combination with a body, of a rotary member mounted in the body, said body having a socket at one side of the member, a fluid supply passageway opening into the socket at one point, a delivery passageway opening from the socket at another point, a valve cage detachably fitted in the socket and having an-internal bore in communication with said passageways and a valve seat surrounding the bore, packing between the cage and walls of the socket and interposed between the passageways, a valve in the bore of the cage coacting with the valve seat, an actuating stem for the valve extending through the inner end of the cage and the adjacent wall of said socket, a packing interposed between the inner end of the cage and the said wall and surrounding the stem, and a cam on the member for actuating the stem and valve.

2. In a valve for drilling apparatus, the combination with a body, of a rotary member mounted in the body, said body having a socket at one side of the member, a fluid supply passageway opening into the socket at one point, a delivery passageway opening from the socket at another point, a valve cage detachably fitted in the socket and having an internal bore in communication with said passageways and a valve seat surrounding the bore, packing between the cage and the walls of the socket and interposed between the passageways, a plug threaded into the outer end of the socket and having a recessed seat that receives the outer end of the cage, valve in the bore of the cage coacting with the valve seat, an actuating stem for the valve extending through the inner end of the cage and the adjacent wall of said socket, a packing interposed bet-ween the inner end of the cage and the said wall and surrounding the stem, said wall having a vent port from the stem to atmosphere on the inner side of the packing, and a cam on the rotary member for actuating the stem and valve.

In testimony whereof, I aflix my signature.

AUGUST H. KATTERJOHN. 

